1, On-board N76E003/STM8S003 and ESP-01 WIFI module2, Having two modes:(1) Mode 1: Cell phones carry on the wifi module directly(2) Mode 2: Cell phone and wifi module carry on the same routerAdditional function: As an USB relay module when unplug the ESP-013, Transmission distance:(1) In the open environment, the maximum transmission distance is 100m when the cell phone carry on the wifi module directly ;(2) when the wifi module and cell phone carrying on the same router, the transmission distance depend on the router’s signal intensity;4, Use Smartconfig technology of ESP8266 to configurate the password for theESP-01 module with APP5, On-board 5V, 10 A / 250 v AC 10 A / 30 v DC relay, absorb 100000 times continuously, Module with diode effusion protection, short response time6, On-board model selection and working position indicator LED7, On-board preserved UART debug interface and MCU program interface8, Size: 59*40mm

Interface and sources:

IN+, IN-: 5V power inputTX, RX: UART communicationSWIM, NRST: MCU program interfaceS1: Mode selection key, default is mode 1S2: Restore keyLED D2 and D4(red): Relay indicatorLED D7(red): Mode 1 indicatorLED D5(blue): Mode 2 indicatorLED D6(green): Working state indicator, the description of D6 as below:(1)It’s means internal self-configuration or lost connection with the router when D6 off(2)It’s means the ESP-01 are waiting for the APP configurate the password for it when D6 fast blink every 0.5S(3)It’s means the whole configuration is done and waiting for establishing TCP connection with APP when D6 slow blink every 2S(4) It’s means the TCP connection between ESP-01 and APP is OK when D6 on all the time.Relay control command(must be hex format):Open the first relay: A0 01 01 A2Close the first Relay: A0 01 00 A1Open the second relay: A0 02 01 A3Close the second Relay: A0 02 00 A2